OMP

Use the OMP template to configure OMP parameters for all vEdge Cloud and vEdge router devices, and for vSmart controllers.

The Viptela Overlay Management Protocol (OMP) establishes and maintains the Viptela control plane.

Navigate to the Template Screen

In vManage NMS, select the Configuration ► Templates screen.

In the Device tab, click Create Template.

From the Create Template drop-down, select From Feature Template.

From the Device Model drop-down, select the type of device for which you are creating the template.

To create a custom template for OMP, select the Factory_Default_OMP_Template and click Create Template. The OMP template form is displayed. The top of the form contains fields for naming the template, and the bottom contains fields for defining OMP parameters. You may need to click a tab or the plus sign (+) to display additional fields.

When you first open a feature template, for each parameter that has a default value, the scope is set to Default (indicated by a check mark), and the default setting or value is shown. To change the default or to enter a value, click the scope drop-down to the left of the parameter field and select one of the following:

When you click Device Specific, the Enter Key box opens. This box displays a key, which is a unique string that identifies the parameter in a CSV file that you create. This file is an Excel spreadsheet that contains one column for each key. The header row contains the key names (one key per column), and each row after that corresponds to a device and defines the values of the keys for that device. You upload the CSV file when you attach a Viptela device to a device template. For more information, see Create a Template Variables Spreadsheet.

To change the default key, type a new string and move the cursor out of the Enter Key box.

Examples of device-specific parameters are system IP address, hostname, GPS location, and site ID.

Global (indicated by a globe icon)

Enter a value for the parameter, and apply that value to all devices.

Examples of parameters that you might apply globally to a group of devices are DNS server, syslog server, and interface MTUs.

Minimum OMP Configuration

OMP is enabled by default on all vEdge routers, vManage NMSs, and vSmart controllers, so there is no need to explicitly configure or enable OMP. OMP must be operational for the Viptela overlay network to function. If you disable it, you disable the overlay network.

Configure Additional OMP Options

To configure additional OMP options:

Step

Parameter Name

Description

1.

Template Name

Enter a name for the template. It can be up to 128 characters and can contain only alphanumeric characters.

2.

Description (Template)

Enter a description for the template. It can be up to 2048 characters and can contain only alphanumeric characters.

3.

Graceful Restart for OMP

Ensure that Yes is selected to enable graceful restart. By default, graceful restart for OMP is enabled.

4.

Overlay AS Number (on vEdge routers only)

Specify a BGP AS number that OMOP advertises to the router's BGP neighbors.

Specify the maximum number of equal-cost routes to advertise per prefix. vEdge routers advertise routes to vSmart controllers, and the controllers redistributes the learned routes, advertising each route-TLOC tuple. A vEdge router can have up to four TLOCs, and by default advertises each route-TLOC tuple to the vSmart controller. If a local site has two vEdge routers, a vSmart controller could potentially learn eight route-TLOC tuples for the same route. If the configured limit is lower than the number of route-TLOC tuples, the best route or routes are advertised.Range: 1 through 16Default: 4

7.

ECMP Limit (on vEdge routers only)

Specify the maximum number of OMP paths received from the vSmart controller that can be installed in the vEdge router's local route table. By default, a vEdge router installs a maximum of four unique OMP paths into its route table.Range: 1 through 32Default: 4

8.

Send Backup Paths (on vSmart Controllers only)

Click On to have OMP advertise backup routes to vEdge routers. By default, OMP advertises only the best route or routes. If you configure to send backup paths, OMP also advertises the first non-best route in addition to the best route or routes.

9.

Advertisement Interval

Specify the time between OMP Update packets.

Range: 0 through 65535 secondsDefault: 1 second

10.

Hold Time

Specify how long to wait before closing the OMP connection to a peer. If the peer does not receive three consecutive keepalive messages within the hold time, the OMP connection to the peer is closed.Range: 0 through 65535 secondsDefault: 60 seconds

11.

EOR Timer

Specify how long to wait after an OMP session has gone down and then come back up to send an end-of-RIB (EOR) marker. After this marker is sent, any routes that were not refreshed after the OMP session came back up are considered to be stale and are deleted from the route table.Range: 1 through 3600 seconds (1 hour)Default: 300 seconds (5 minutes)

12.

Shutdown

Ensure that No is selected, to enable to Viptela overlay network. Click Yes to disable OMP and disable the Viptela overlay network. OMP is enabled by default.

13.

Advertise (on vEdge routers only)

Click On or Off to enable or disable the vEdge router advertising to OMP the routes that it learns locally:

BGP—Click On to advertise BGP routes to OMP. By default, BGP routes are not advertised to OMP.

OSPF—​Click On and click On again in the External field that appears to advertise external OSPF routes to OMP. OSPF inter-area and intra-area routes are always advertised to OMP. By default, external OSPF routes are not advertised to OMP.

Connected—Click Off to disable advertising connected routes to OMP. By default, connected routes are advertised to OMP.

Static—Click Off to disable advertising static routes to OMP. By default static routes are advertised to OMP.